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ZyXEL Communications U-336R/RE manual ∙ Local Hang-up ∙ Remote Hang-up ∙ Carrier Lost ∙ On Line

Models: U-336R/RE

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T401 Timeouts and T402 Timeouts

These are for the manufacturer checking link layer operation. T401 and T402 are timers used in MNP4 or V.42. T402 will count when the modem is connected in the idle state with no data to transmit or receive.

FCS Errors

Frame CheckSum Errors/number of block errors. A lot of FCS errors indicate a bad line.

Round Trip Delay

Round trip delay between modems in T (1/2400 sec) units. Normally should be in the range of 0-100. A satellite link will introduce a delay of about 1300 T.

Xmitter Underrun

Number of times the modem fails to provide data octet in time for transmission.

Receiver Overrun

Number of times the modem fails to take data octet in time from receiver.

Last speed/protocol

The speed and protocol of the link before hang-up. It may be different from the initial speed because of retrain and speed fall- back or fall-forward. Speed change is a clue to changing line conditions.

Disconnect Reason

∙Local Hang-up

∙Remote Hang-up

∙Carrier Lost

∙On Line

Diagnostics & Troubleshooting 125

Image 137

ZyXEL Communications U-336R/RE ∙ Local Hang-up ∙ Remote Hang-up ∙ Carrier Lost ∙ On Line, Diagnostics & Troubleshooting

Contents

ZyXEL ACCESSING INTERNET & INTRANETU-336R/RE User’s Guide Version MarZyXEL Limited Warranty Acknowledgments FCC Part 15 InformationCopyright 1997 by ZyXEL Information for Canadian Users Page ∙ E-mail Contacting ZyXELZyXEL Communications Corporation 2 Installation Contents1 Introduction 3 Basic Modem Operation5 Leased Line Operation 4 Synchronous Mode Operation7 Fax Operation 6 Special Functions10 Diagnostics & Troubleshooting 8 AT Command Set Summaries9 Status Registers & Result Codes 11 Upgrading Your ModemTerminal Blocks PC Serial Port Pinouts Macintosh Serial Port Pinouts 12 Terminal Pinouts13 Index Standard Features Modem Features1 Introduction Introduction2 Introduction Intelligent FeaturesIntroduction Technical SpecificationsFax Compatibility Enclosed Equipment Unpacking Your ModemRequired Equipment 4 IntroductionIntroduction Becoming a Registered Owner6 Introduction U-336R/RE Modem Card 2 InstallationInstallation Blinking 8 InstallationName Installation Required Steps for U-336R/RE Installation10 Installation Installing the modem cardConnect to phone lines ∙ U-336R Section 2 terminals 3 & 4 For dial-up lineFax/Modem Communication Software Installation Hooking Up PowerConnect to Computers ∙ U-336R Section 3 terminals 5 ,6 ,7 & 8 For leased line connectionValue 12 InstallationSetting Installation 10 for troubleshooting suggestions14 Installation Using the Windows 95 Hyper Terminal Program Understanding AT Commands3 Basic Modem Operation Basic Modem OperationATEnter 16 Basic Modem OperationBasic Modem Operation Dialing using the ATD CommandDialing and Answering Techniques 18 Basic Modem Operation Making Your First ConnectionAuto-Answer and Hook Controls Basic Modem Operation Quick Tips when issuing AT CommandsATDT17146930762enter Omit the ‘1714’ if you are in this area code Command 20 Basic Modem OperationCommand AT Command Set/TypeBasic Modem Operation Modem Result Codes22 Basic Modem Operation Viewing S Register ValuesChanging S Register Values Storing Phone Numbers Non-Volatile MemoryDialing Stored Phone Numbers Basic Modem Operation24 Basic Modem Operation Saving Settings and User ProfilesHelpful Hints for PC Computers Basic Modem Operation Default Modem Settings for PC’sZyXEL Serial/Parallel I/O Card Helpful Hints for Macintosh Computers Special AT Command Settings for MacintoshMacintosh Serial Port Mac Software TipsHelpful Hints for UNIX-Based Computers Basic Modem Settings for UNIXSerial Cable Basic Modem Operation28 Basic Modem Operation Unix Software TipsSynchronous Mode Operation 4 Synchronous Mode OperationV.25bis Command Set Clock Options 30 Synchronous Mode OperationSynchronous Mode Operation RTS Options32 Synchronous Mode Operation Command State OptionsDialing from Synchronous Mode Auto-Answer Answering from Synchronous ModeManual Answer Synchronous Mode Operation34 Synchronous Mode Operation Line Type Setting Connecting to a Leased Line5 Leased Line Operation Leased Line OperationLeased Line Handshaking Power Level SettingManual Connect Auto HandshakeLeased Line Operation Leased-Line Dial BackupDial Backup 38 Leased Line Operation Terminating a Leased Line ConnectionAborting from Leased-Line Operation Security Functions 6 Special FunctionsLevels of Security Special Functions40 Special Functions User PasswordsSpecial Functions CommandFunction 42 Special Functions Remote ConfigurationAT*Rab AT*WabSpecial Functions Caller Number Delivery Caller IDRING TIME MM-DD hhmm CALLER NUMBER CALLERID or CALLER NAMECALLERNM 44 Special FunctionsRING RING TIME 04-28 CALLER NUMBER 7135551414 or CALLER NAMESpecial Functions Here is an example46 Special Functions Distinctive RingType Extended Distinctive Ring EDRRing Sequence Special FunctionsOnce enabled with the proper settings, EDR can 48 Special FunctionsSpecial Functions Setting Up EDR50 Special Functions EDR Application ExampleSpecial Functions Save the settings in a profile and reset the modem with AT&WZ52 Special Functions Fax Operation 7 Fax OperationModem as Fax Machine Defining the Fax Command Sets Fax Command setsITU-T T.30 Fax Protocol 54 Fax OperationFax Operation Class 1 Command Set56 Fax Operation Class 2 Command Set+FTH and +FRH support value 3 V.21 ch. 2 / 300 bps only +FCIG=string valueCommand Syntax Commandln,df,ec,bf,st +FDCC=vr,br,wd58 Fax Operation Command+FDIS=vr,br,wd,l +FDCS=vr,br,wdn,df,ec,bf,st +FDT=df,vr,wd60 Fax Operation +FLID=stringCommand ValueClass 2 Command Responses CommandValue DescriptionClass 2 Flow Control 62 Fax Operation+FCC=vr,br,w Class 2.0 Command Setd,ln,df,ec,bf,st Supported CommandsCommand 64 Fax OperationValue Description+FLI=string +FIS=vr,br,wdtpr,idr,nsr ln,df,ec,bf,st+FPI=string +FNS=string+FRQ=pgl,cbl 66 Fax OperationClass 2.0 Command Responses CommandValue DescriptionResponse 68 Fax OperationValue Function and DescriptionValue ResponseFunction and Description Fax Operation70 Fax Operation Extended Fax AT Command SetCommand CommandParameter Setting FunctionStatus Report Result Codes #Pstring72 Fax Operation Pstring SnnnnCONNECT FAX/SnnnnVnTnRnLnCnPstring Field74 Fax Operation Flow ControlError Level Fax Reception from a BBSString Fax Operation1 ZyXEL 76 Fax OperationAT Command Set Summaries 8 AT Command Set SummariesBasic AT Command Set Command 78 AT Command Set SummariesOptions Function & DescriptionAT Command Set Summaries CommandOptions Function & DescriptionDescription of ATI2 Output 80 AT Command Set SummariesMax Outstanding AT Command Set SummariesOutput Value Description 82 AT Command Set SummariesOutput Parameter Command Extended AT& Command SetAT Command Set Summaries Output ParameterCommand 84 AT Command Set SummariesOptions Function & DescriptionAT Command Set Summaries CommandOptions Function & DescriptionCommand 86 AT Command Set SummariesOptions Function & DescriptionAT Command Set Summaries CommandOptions Function & DescriptionCommand 88 AT Command Set SummariesOptions Function & DescriptionCommand Extended AT* Command SetCommand AT Command Set SummariesCommand 90 AT Command Set SummariesOptions Function & DescriptionAT Command Set Summaries CommandOptions Function & DescriptionS-Register Descriptions 9 Status Registers & Result CodesBasic S-Registers ATSn=x 92 Status Registers & Result CodesStatus Registers & Result Codes Extended S-Registers ATSn=xFunction and description 94 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 96 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 98 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 100 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 102 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 104 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 106 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 108 Status Registers & Result CodesCommand Status Registers & Result Codes CommandFunction and description Function and description 110 Status Registers & Result CodesCommand Status Registers & Result Codes Result Code OptionsATXn Result Code Option Table Result Code Chart Symbol Reference 112 Status Registers & Result CodesResult Code Field Descriptions Connect Strings for Error Corrected ConnectionsExample CONNECT 38400/V.32bis 14400/V.42bis Status Registers & Result CodesNumerical 114 Status Registers & Result CodesVerbose NumericalStatus Registers & Result Codes 116 Diagnostics & Troubleshooting 10 Diagnostics & TroubleshootingDiagnostics Diagnostics & Troubleshooting Power-On Self TestLoopback Tests 118 Diagnostics & TroubleshootingDiagnostics & Troubleshooting Indicator LightsRetransmission Indicator Remote Digital Loopback Test AT&T6Line Condition Status Display 120 Diagnostics & TroubleshootingReceived Signal Power Level RX Diagnostics & TroubleshootingPhase Jitter PJ Round Trip Echo Delay EDLink Status Report ATI2 122 Diagnostics & TroubleshootingCharacters sent from the DTE to the modem for transmission Diagnostics & TroubleshootingCharacters received by the modem from the line and sent to the DTE 124 Diagnostics & Troubleshooting∙ Local Hang-up ∙ Remote Hang-up ∙ Carrier Lost ∙ On Line Diagnostics & Troubleshooting126 Diagnostics & Troubleshooting Trouble ShootingAT Command Set Problems Diagnostics & Troubleshooting Your modem fails to execute AT commands128 Diagnostics & Troubleshooting Command Echo ProblemsAnswer Problems Diagnostics & Troubleshooting Dialing Problems130 Diagnostics & Troubleshooting Data Transfer ProblemsConnect Problems Upgrading Your Modem 11 Upgrading Your ModemUpgrading by Flash EPROM 132 Upgrading Your Modem Kernel Recovery ModeTerminal Pinouts 12 Terminal PinoutsTerminal Blocks 134 Terminal Pinouts PC Serial Port PinoutsTerminal Pinouts Macintosh Serial Port Pinouts136 Terminal Pinouts Index 13 Index138 Index